An Asthmatically patient (suffers from difficulty in breathing) observe fasting?

الاستفتاء

Assalamu Alaikum
Can an Asthmatically patient (who suffers from difficulty in breathing) observe fasting? Such a patient uses inhaler and can he use it, if it is found necessary?

الجواب حامدا و مصلیا

Undoubtedly it is correct and permissible for such a person to observe Fasting . Using an inhaler invalidates the Fast and using due to helpless situation under compulsion will break Fast and there is no Kaffara for it but making Qadha is necessary.
Allah knows best.